Corolla cleans the throttle valve without removing the rubber sleeve.

Toyota corolla throttle cleaning tutorial: first remove the throttle from the engine compartment, and you can find the position of the throttle along the air filter pipeline. The standard way to clean the throttle is to remove the throttle, pull the throttle to full open by hand, spray the throttle cleaner on cotton cloth, and wipe the dirty part of the throttle until it is clean.

Then, when reinstalling the throttle, match: throttle matching method 1:

Turn the key to the second gear, which is the gear where the instrument indicates full light. Then wait 20 seconds, and then step on the accelerator. After maintaining 10s or so, release the throttle. Turn off the ignition switch, pull out the key, and the initialization is complete. Throttle matching method 2:

Turn the key to the second gear and keep it for 30s. Then turn off the ignition switch and pull out the key. Attention, wait 15~20s before ignition. Then ignite to see if the refueling is normal and if the engine fault light goes out. If not, repeat the previous steps.